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singledispatch-method (PLE1519)#

Derived from the Pylint linter.

Fix is sometimes available.

This rule is unstable and in preview. The --preview flag is required for use.

What it does#

Checks for methods decorated with @singledispatch.

Why is this bad?#

The @singledispatch decorator is intended for use with functions, not methods.

Instead, use the @singledispatchmethod decorator, or migrate the method to a standalone function.


from functools import singledispatch

class Class:
    def method(self, arg):

Use instead:

from functools import singledispatchmethod

class Class:
    def method(self, arg):

Fix safety#

This rule's fix is marked as unsafe, as migrating from @singledispatch to @singledispatchmethod may change the behavior of the code.